Get help for cmdlet

[corbob]

resolves #26

Adding the powerShell/showHelp message.

This currently only gets help for the function test. This is the framework to get it working. Next step is determining what to send to PSES. I suspect we could do like vscode-powershell and if in Visual mode, send the contents of the highlight, if in a normal mode, then we get the current word (with expansion across the hyphen).

[yatli]

Curious, what's the difference between showHelp and onHover? A few VSCode extensions now support "info pane" which places help info in a persistent window -- guess showHelp is similar?

Edit: if that's the thing, then I'll definitely map it to <F1>! :D

[corbob]

Curious, what's the difference between showHelp and onHover?

showHelp sends a string to PSES which then evaluates it against Get-Help with -ShowOnline so it will open the online help. If there is no online help (or we can't reach the online help URI) then it will just output into the PSIC

[yatli]

thanks for the explanation. I just played with it for a few commands, but it keeps landing on a 404 page. For example: Get-Help -Online Get-ChildItem

gets me: https://docs.microsoft.com/en-us/powershell/module/4.0/microsoft.powershell.core/providers/FileSystem-Provider/Get-ChildItem-for-Filesystem